Mechanism for operating indicators for hydraulic valves.



IA'IBNTED MAR.v Io, 190s.

No.y 881,412.

l G. W. KNIGHT. .i AIAECIIAIIISM PoR UPEIIA'IING INDICATORS IOR HYDRAULIC VALVES.

APPLICATION FILED HAB.. 14, 1967.

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No. 881,412. PATBNTED MAR.I0, 190s. 4 G. W. KNIGHT.

`IIIIIGIIAIIISII"IOROPERATING INDICATORS POR HYDRAULIC VALVES.

APPLIOATION FILED MAR.'14. 1907.

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To all whom it may concern:

UNITED STATES PATENT onirica. v l

GERALD'W; KNIGHT, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH FILTER MANUFACTURING CO., OF PITTSBURG, PENNSYLVANIA.

MECHAN-ISM FOR OPERATING INDICATOR/SFOR HYDRAULIC VALVES.

y Specicaton of Letters Patent.

Patented March 10, 1908.

Be it known that I, GERALD W. KNIGHT, a

resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Mechanism for Operating Indicators for Hydraulic Valves; and I do hereby declare the following to be a full, clear, and exact de-'- scri tion thereof.

y invention relates to mechanism for operating indicators for valves, and more especially where such valves are employed. in connection with iltration plants.

The obj ect of my invention is to provide ai simple form of apparatus by means of which the amount of movement of the valve may be regulated and controlled with great accuracy, and its slightest movement registered, all the parts, pi e connections, etc., being so constructed an arranged as to beI readily accessible at all times for purposes of inspection or repair.

To these ends my invention comprises, generally stated, a suitable frame or table, registering mechanism and connections between said registering mechanism andA the plungerof the hydraulic valve, together with means for regulating the supply of Huid to" operate the plunger of said valve, whereby the operator is able to tell with great accuracy from the registering mechanism just to what extent the valve has been opened or closed.

In the accompanying drawings Figure 1' is at side view of' my improved apparatus, the stand or table being broken away to yshow the interior thereof; Fig. 2 is a plan view; Fig. 3 is an end elevation dpartly broken away; Fig. 4 is an enlarge detail view; Fig. 5 isan enlarged plan view of the pulley mechanism for turning themain hollow shaft; Fig. 6 is a vertical sectional view of the hydraulic valve.

Referring to the drawings the numeral 2 designates a suitable table or stand which may be composed of hard wood, slate, marble or other suitable material. Located in the top of said table are the indicator plates 3 which may be formed of brass or other suitable material. These indicator plates have a graduated scale formed thereon together with the letters S and O indicating Shut and ,Open. On said plates are secured the stirrups 4 havingrcentral openings corresponding with central openings in v the dial plates 3. In the drawing six of these 4dial plates have been illustrated, each having opposite thereto a name plate bearing the terms .Air, Eiuent, Drain etc. As the construction of the registering. mechanism for each dial is the same it will only be necessary to describe one in detail.

The hollow shaft 5 is threaded at its upper end and' engaging said threaded portion above the dial plate 3 is the indicator hand 6. The lower end of said shaft passes through an opening in the channel beam 7 extending fromonefend of the table to the other..A A bushing 8 engages the opening in said channel'bar and surrounds said shaft and below said bushing is the collar 9 secured to said shaft by the set screw l0. In this manner the shaft 5 is kept accurately in alinement lfor the purpose hereinafter set forth. Secured to the shaft 5 is the sheave 11 provided with the V-shaped groove,12 in its periphery. A woven wire cord, chain or other exible belt 13 passes around the sheave 11 engaging the groove 12 thereof,

said cordbeing secured at one end to the plunger 14 of a suitable hydraulic or other `fluid operated valve 15, said plunger being connected to the ordinary piston working 1n thecylinder 16. The opposite end of the cord 13 is secured to a weight 17. Idle pulleys 18 and 19 are supported in the bracket 2() secured to the channel 7 and resting at its opposite end on the angle 21 secured to the inner wall of the stand or table 2, said pulleys receiving the cord 13 as it passes `fromthe'sheave 11.

The pulley 18 receives that end of the. cord carrying the weight 17 `while the ulley 19 engages that portion of the cordw ich passes down and is attached to the plunger 14 of the hydraulic valve. The action of the weight 17 is to bring sufficient tension upon the cord to make sure of proper indicating on the indicator dial, as

fully hereinafter set forthf.

Extendingdown within the shaft 5 is the valve operating rod 23, said rod passing. up through the stirrup 4. Secured'.` to the upper end` of the rod 23 is the controller-arm 24, said arm being secured to said rod by means ofthe nut 25, said arm being held between said nut and a shoulder-26 on said rod. The controller-arm 24 has the handle 27, and projectingdown from said rod is the lug. 28, said lug bein adapted to engage'the stops 29-uponrthed1al3. The lower end of the'rod 23 is connected by the coupling 30 to the stem 31 of a suitable 3-way valve 32. As this 3-way valve may be of any suitable construction it has not beenl deemed necessary to illustrate the same in detail. This 3-way valve 32 is connected up to the supply pipe 33 and the discharge pipe 34, as well as to the pipes 35 and 35a leading to and from the inlet and exhaust ports of the hydraulic cylinder, respectively. The supply pipe 33 and the discharge ipe 34 operate in connection With the di 'erent valves and are arranged horizontally within the table 2, said pipes being connected up to the vertical supply and discharge pipes 36 and 37 respectively. By this construction the pipe connections are all within the table where they are readily accessible in case it is necessary to make repairs or for other purposes.

When my improved apparatus is in use and it is desired to operate, for instance, the valve supplying air to the iilter, the operator grasps the controller-arm 24 of the dial opposite the name plate bearing the word Air, and moves said arm to the right, whereby the valve rod 23 is correspondingly turned and the 3-way cock 32 is operated so as to open the valve to permit the water to pass through the supply pipe'33into, the pipe 35 leading to the inlet of the hydraulic cylinder, whereupon the plunger in said cylinder is lifted and with it the hydraulic valve. This movement of the hydraulic valve will permit the air to ass into the lter bed and the amount of t e movement of said hydraulic valve is at the same time recorded on the dial 3 in the following manner: ,Just as soon as the plunger 14 of the hydraulic valve rises, the weight 17 acting to draw the cord 13 taut will at the same time act to turn the sheave 11 around which said cord passes, and this rotary movement is transmitted to the shaft 5. As the shaft `5 rotates the indicator hand 6 will be moved over the graduated scale on the dial and said scale having been properly proportioned with reference to the amount of movement of the hydraulic valve, said indicator hand will accurately register just the position of the hydraulic valve, and as a consequence the amount of air to be admitted to the filter is thus accurately and definitely controlled. The slightest movement on the part of the controller arm 24 will have its effect upon the indicator hand and in this way the indicator hand may be moved from Shut7 to "Open or held at any intermediate point. The movement of. the controllerarm is governed by the stops 29 into contact with which the said arm comes when the valve is shut or wide open.

The dials and the controller-arms are in lfull view and within easy reach of the opertable, so that by removing the back of the table which may be hinged if desired, all the operative parts are exposed to view as well as the pipe connections so that ready access may be had for purposes of inspection or repair.

What I claim is:

1. .In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a registering device, connections between said valve and said registering device, and means for controlling the supply of fluid to said valve to operate the plunger of same.

2. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a registering device, connections between said valve and said registering device, a controller-arm, a fluid supply valve, and connections between said controller-arm and said iuid supply valve for admitting lluid tc operate the plunger of said hydraulic valve.

3. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, connections between said indicator hand and the plunger of said valve, a controller-arm, a vHuid supply valve, and

connections between said arm and said fluid supply valve for admitting fluid to operate the plunger of said hydraulic valve.

4. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, a sheave'connected to said indicator hand, a cord passing around said sheave secured at one end to the plunger of said hydraulic valve, means for holding said cord taut as said plunger ascends, and means for controlling the supply of fluid to said hydraulic valve to operate said plunger.

5. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, a sheave connected to said indicator hand, a belt or cord. engaging said sheave and connected at one end to the plunger of said hydraulic valve, a weight attached to the other end of said cord, and means for controlling the supply of fluid to said valve to operate the said plunger.

6. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, a sheave connected to said indicator hand, abelt or cord engaging said sheave, idle pulleys for said cord, on(` end of said cord being connected to the plunger of said valve, a weight attached to thc other end of said cord, and means for coutrolling the supply of fluid to said valve to operate said plunger.

7. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a-dial, an indicator hand, a shaft connected to said indicator hand, `a sheave on said shaft, a belt or cord engaging said sheave connected at one end to the p un er of said valve, means for holding said be t taut as said plunger rises, and means for controlling the supply of fluid to said valve toy operate said plunger.

8. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, a hollow shaft connected to said hand, a sheave carried by said shaft, connections between said sheave and the plunger of said hydraulic valve, a controllerarm over said dial, a rod connected to said controller arm passingV down through said hollow shaft, and connections between said rod and a fluid sup ly valve for supplying fluid to said hydraulic valve to operate the plunger of same.

9. ln mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial, an indicator hand, means for operating said indicator hand by the movement of the plunger of said h draulic valve, a controller-arm over said dia a fluid supply valve for admitting fluid to operate the plunger of said hydraulic valve, connections between said controller arm and said supply valve, andstops on said dial controlling the movement of said controller arm.

10. ln mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a dial plate, a stirrup secured to said dial plate, a hollow shaft extending u through isaid dial plate, an indicator han on sald shaft, a sheave at the lower'end of said shaft, connections between said sheave and the plunger of said valve, a valve rod passing up through said hollow shaft and through said dial and stirrup, a controller arm secured to said rod above said stirrup, a fluid su ply valve, and connections between said ro and said fluid supply valve for admittin fluid to operate the plunger of said hydrau ic valve.

11. In mechanism for operating hydraulic valves, the combination with a suitable frame or table, of a hydraulic valve, a registering device on top of said table, connections between said valve and said registering device contained'within said table, supply and discharge pipes for said hydraulic valve within said tab e, a valve for controlling said supcply and discharge pipes contained within sai table, and means for controlling the supply of fluid to said hydraulic valve to operate the plunger of the same.

In testimony whereof, l the said GERALD W. KNIGHT have hereunto set my hand.

GERALD W. KNIGHT.

Witnesses:

Ro'r. D. TOTTEN, ROBERT C. ToTTEN. 

